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γ-ray Survey of the Obaku Fault, Uji, Japan
Zisin (Journal of the Seismological Society of Japan 2nd ser )
The i-ray survey using a multichannel analyzer (hereafter called MCA) with NaI(Tl) scintillation counter was carried out across the Obaku active fault, which is extending to about N-S direction in southern part of Kyoto Prefecture. This study reveals the increase of 1-radiation due to 214Bi and 40K over the fault plane necessarily coincides to each other. The increase of 1-radiation due to 214B1 is clearly attributed to the radioactive decay of gaseous 222Rn emanating through the active faultdoi:10.4294/zisin1948.39.2_267 fatcat:4hcs64starcutloovxfnw4lg6i